Teresa B Robinson

US Patent:

6759923, Jul 6, 2004

Filed:

Feb 19, 2002

Appl. No.:

10/079768

Inventors:

Gordon R. Scott - Plano TX
Teresa R. Robinson - Garland TX

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01P 518

US Classification:

333116, 333238

Abstract:

A hybrid coupler ( ) includes a substrate ( ) having a coupling structure formed thereon using thick film processing techniques. The coupling structure includes two parallel conductive strips ( ). One strip ( ) is coupled at one end to an incident port ( ) and at the other end to a direct port ( ). The other strip ( ) is coupled at one end to a coupled port ( ) and at the other end to an isolated port ( ). An electrically conductive shield ( ) is aligned with and enhances coupling between the conductive strips. A dielectric layer ( ) is provided between the shield and the conductive strips.